SET ANSI_NULLS OFF

SET QUOTED_IDENTIFIER ON

if NOT EXISTS 
	( 
		SELECT	* 
		FROM	INFORMATION_SCHEMA.COLUMNS
		WHERE	TABLE_NAME='tblContentStructure'
				AND COLUMN_NAME='nCloneStructId' 
	)
	ALTER TABLE dbo.tblContentStructure
		ADD nCloneStructId int NULL;


